I've been in this hobby for 11 years and I'm not quitting anytime soon. Having my reef is an excellent stress reliever when things are going right.
Back when I began this hobby, I had a 55g handed down to me. Through the life of this tank, I've encountered the most frustrating moments of losses and failure. If it wasn't a flood, it was random coral loss.
I consider myself a stubborn person so with this trait, I upgraded to a 75g. This was my most successful tank until I moved, things were never the same. Within two weeks after the move, I lost 90% of my acros and 5 fish. I kept it going for 5 months before I said enough is enough, I sold what remained and stayed 'Dry' for two years. Besides, I was going to school, so I couldn't dedicate too much time to the tank.
During the dry time, I still remained on RC, reading and continuously seeing what's new. I thought I caught the bug once I began planning a new tank, but realized that I've had it all along.
Eventually my 67g rimless came into existence, two years later, I'm back in the game, still hooked.
It's crazy when one recalls all the money they've spent on this hobby, only to fail and try again. I try not to think about it and just enjoy my piece of the ocean.